Despite what your parents or grandparents or who-ever told
you to hoard bicentennial half dollars, they are only worth
50 cents. If you actually have an original bank wrapped roll
of uncirculated coins, you might get a few dollars over face
value for them. But circulated ones are only worth 50
cents. Many banks will have half dollars and if you
ask, you might get some bicentennial ones. Yes these
were made for a special occasion, but many, many millions
were made. Way more then the collecting community
needs. this is an example where supply exceeds demand. Please see,
What Makes a Coin Valuable?